vb.net如何跨线程调用窗体控件

自己写了几行代码，在调试过程中说是线程间操作无效，查询之后发现是要先对线程进行委托，求教要如何进行改动。
代码如下：
 Private Sub Listen()
        Try
            tlTcpListen = New TcpListener(IPAddress.Parse("59.77.43.240"), iPort) '以定义的端口号来初始化TcpListener实例
            tlTcpListen.Start() '开始监听
            ToolStripStatusLabel1.Text = "正在监听..."
            skSocket = tlTcpListen.AcceptSocket() '通过TCP连接请求
            nsStream = tcClient.GetStream() '用以发送、接收数据的网络基础数据流
            srRead = New StreamReader(nsStream) '以得到的网路基础数据流来初始化StreamReader实例
            ToolStripStatusLabel1.Text = "已经建立TCP连接！"

            '循环侦听
            While blistener
                Dim sMessage As String = srRead.ReadLine() '从网络基础数据流中读取一行数据
                If (sMessage = "STOP") Then
                    tlTcpListen.Stop() '关闭侦听
                    nsStream.Close()
                    srRead.Close() '释放资源
                    ToolStripStatusLabel1.Text = "无连接！"
                    thThreadRead.Abort() '中止线程
                    Return
                Else
                    '判断是否为断开TCP连接控制码
                    Dim sTime As String = DateTime.Now.ToShortTimeString()
                    '获取接收数据的时间
                    ListBox1.Items.Add(sTime + " " + sMessage)
                End If
            End While
        Catch ex As System.Security.SecurityException
            MessageBox.Show("侦听失败！", "错误")
        End Try
    End Sub